TL dosimetry of nanocrystalline Li sub(2)B sub(4)O sub(7):Cu exposed to 150 MeV proton, 4 MeV and 9 MeV electron beam

Nanocrystals of the Li sub(2)B sub(4)O sub(7):Cu were synthesized by a combustion method using 1000 ppm and 2500 ppm concentrations of Cu. TL characteristics of the synthesized Li sub(2)B sub(4)O sub(7):Cu material doped with Cu of concentration 1000 ppm and 2500 ppm were studied using 150 MeV proton beam, 4 MeV and 9 MeV electron beam. It is observed that Li sub(2)B sub(4)O sub(7):Cu doped with Cu (both 1000 ppm and 2500 ppm) exhibits a linear response in the range 1 x 10 super(0)-3 x 10 super(1) Gy for exposure to 150 MeV proton beam. Nanocrystalline Li sub(2)B sub(4)O sub(7):Cu, doped with 1000 ppm and 2500 ppm Cu, shows a linear TL response in the range 1 x 10 super(-1)-1 x 10 super(1) Gy for 4 MeV and 9 MeV electron beam. Fading of phosphors was also studied and it was found that Li sub(2)B sub(4)O sub(7):Cu is quite suitable for proton and electron beam dosimetry.